Shortened hgmerge a little bit.

hgmerge

@@ -20,36 +20,24 b' cp "$LOCAL" "$LOCAL.orig"'
 
 # Attempt to do a non-interactive merge
 if type merge > /dev/null 2>&1; then
-    if merge "$LOCAL" "$BASE" "$OTHER" 2> /dev/null; then
-	# success!
-	exit 0
-    fi
+    merge "$LOCAL" "$BASE" "$OTHER" 2> /dev/null && exit 0
     cp "$LOCAL.orig" "$LOCAL"
 elif type diff3 > /dev/null 2>&1; then
-    if diff3 -m "$LOCAL.orig" "$BASE" "$OTHER" > "$LOCAL" ; then
-	# success
-	exit 0
-    fi
+    diff3 -m "$LOCAL.orig" "$BASE" "$OTHER" > "$LOCAL" && exit 0
     cp "$LOCAL.orig" "$LOCAL"
 fi
 
 if [ -n "$DISPLAY" ]; then
     # try using kdiff3, which is fairly nice
     if type kdiff3 > /dev/null 2>&1; then
-	if kdiff3 --auto "$BASE" "$LOCAL" "$OTHER" -o "$LOCAL" ; then
+	kdiff3 --auto "$BASE" "$LOCAL" "$OTHER" -o "$LOCAL" || exit 1
 	    exit 0
-	else
-	    exit 1
-	fi
     fi
 
     # try using tkdiff, which is a bit less sophisticated
     if type tkdiff > /dev/null 2>&1; then
-	if tkdiff "$LOCAL" "$OTHER" -a "$BASE" -o "$LOCAL" ; then
+	tkdiff "$LOCAL" "$OTHER" -a "$BASE" -o "$LOCAL" || exit 1
 	    exit 0
-	else
-	    exit 1
-	fi
     fi
 fi
 
@@ -73,8 +61,7 b' cleanup_exit() {'
 }
 
 # attempt to manually merge with diff and patch
-if type diff > /dev/null 2>&1; then
-    if type patch > /dev/null 2>&1; then
+if type diff > /dev/null 2>&1 && type patch > /dev/null 2>&1; then
 	# Remove temporary files even if we get interrupted
 	trap "cleanup_exit 1" TERM KILL INT QUIT ABRT
 
@@ -92,7 +79,6 b' if type diff > /dev/null 2>&1; then'
 	fi
 	cleanup_exit 1
     fi
-fi
 
 echo "hgmerge: unable to find merge, tkdiff, kdiff3, or diff+patch!"
 exit 1